Bit Release Joint

The Bit Release Joint is used in operations for drilling out cement, cast iron bridge plugs, composite bridge plugs, and other drillable tools and thereby leaving the drill string intact as the production string. The spring loaded check valve prevents tubing back-flow during drill out. After drill out, a ball is dropped through the drill string and seats in the piston. Pressure applied to the drill string forces the drill bit to release and fall to the bottom of the hole.